August 12, 2014 American Rifleman Editor-in-Chief Mark Keefe fires the ARES Defense MCR (Mission Configurable Rifle). Share this gun video:Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on Pinterest (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to share on Tumblr (Opens in new window)